IPX7 protection
d. only instructed and skilled people may work ‘live’. All final circuits bathroom, both power and lighting, must have:
a.
20.
25. earth fault loop impedance
c.
22. Identify from the list below the test which used verify that all fuses,
circuit breakers and switches are connected the line conductor:
a. continuity test
b. protected additionally RCD
d. only competent people may work ‘live’
d. The Electricity Work Regulations state that:
a. Compare PVC/SWA cables with cables and give their advantages,
disadvantages and typical applications. The socket outlet must be:
a.
26.
. one may work ‘live’
c. Use sketch with notes explanation show how mini-trunking and
skirting trunking could used contain all the electrical supplies a
school’s computing classroom.
23. State the advantages conduit trunking and tray cable enclosure
system for commercial installation such shopping centre. polarity test. functional test
d. overcurrent protection
b.
27. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V system.
21.365
U W
6 6
2 2
C1
L1 C1
2
C3
4
5
6
To phase supply
To phase motor
19. the industrial type
b. protected from overcurrent
c. buried depth 600mm. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V cable sheath supply. RCD protection
c. everyone may work ‘live’
b. Every caravan pitch must have least one 16A socket outlet for
connection caravan.
24. Zone protection
